An 80 pound and 25 ft metal rod is propped up on a rough floor against a frictionless wall in a state of static equilibrium. The center of mass of the rod is located 10 ft up the rod from the bottom. With what magnitude of forces does the vertical wall push against the rod

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.

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